Hi Martin, Apologies for the late response.
Here's a preliminary root cause analysis: On Mon, 30 Jan 2017 13:33:33 +0100 Martin Weinelt <h...@darmstadt.ccc.de> wrote: > This disk is currently in use - repartitioning is probably a bad idea. > Umount all file systems, and swapoff all swap partitions on this disk. > Use the --no-reread flag to suppress this check. > > sfdisk: Use the --force flag to overrule all checks. > ``` In util-linux 2.26, a safeguard was added to sfdisk to try to detect if a disk is in use before partitioning. It does so by issuing the BLKRRPART ioctl, which instructs the kernel to re-read the partition table, which will fail if the disk is currently in use, and this is what sfdisk looks for. However, this operation will also fail with -EINVAL in a number of cases, including when devices are declared to the kernel as unpartitionable, i.e. with bdev->minors == 1. And this is how DRBD declares its own devices. IOW, BLKRRPART on DRBD devices will *always* fail, regardless whether the device is in use or not. > > Adding `--force` to the sfdisk call in > /usr/share/ganeti/os/debootstrap/common.sh:98 > will allow for completion of the os installation. > Adding `--no-reread` didn't change a thing for me. In theory, `--no-reread` should work. I tested it manually here, can you please give it a try again? I would prefer to add `--no-reread` rather than `--force`, if the former works. Regards, Apollon
